It sounds like you're looking for related to a search term: "little man gallery unlocker" .
If you’re a developer testing bypasses, a “gallery unlocker” would involve firing a remote event to the server with a spoofed key: little man gallery unlocker
Can you really unlock the Little Man Gallery without grinding? In this video, I test every “unlocker” script and tool online. Spoiler: most are fake. But one trick using teleportation and anti-cheat bypass temporarily got me inside. Watch until the end to see if I get banned. It sounds like you're looking for related to